73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
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#pragma once
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#include <stdint.h>
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#include "irda.h"
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#define MATCH_BIT_TIMING(x, v, delta) ( ((x) < (v + delta)) \
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&& ((x) > (v - delta)))
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#define MATCH_PREAMBLE_TIMING(x, v, delta) ( ((x) < ((v) * (1 + (delta)))) \
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&& ((x) > ((v) * (1 - (delta)))))
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typedef enum {
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DecodeStatusError,
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DecodeStatusOk,
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DecodeStatusReady,
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} DecodeStatus;
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typedef struct IrdaCommonDecoder IrdaCommonDecoder;
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typedef DecodeStatus (*IrdaCommonDecode)(IrdaCommonDecoder*);
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typedef bool (*IrdaCommonInterpret)(IrdaCommonDecoder*);
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typedef DecodeStatus (*IrdaCommonDecodeRepeat)(IrdaCommonDecoder*);
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typedef enum IrdaCommonState {
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IrdaCommonStateWaitPreamble,
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IrdaCommonStateDecode,
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IrdaCommonStateProcessRepeat,
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} IrdaCommonState;
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typedef struct {
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uint16_t preamble_mark;
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uint16_t preamble_space;
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uint16_t bit1_mark;
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uint16_t bit1_space;
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uint16_t bit0_mark;
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uint16_t bit0_space;
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float preamble_tolerance;
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uint32_t bit_tolerance;
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} IrdaCommonDecoderTimings;
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typedef struct {
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IrdaCommonDecoderTimings timings;
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uint32_t databit_len;
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IrdaCommonDecode decode;
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IrdaCommonInterpret interpret;
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IrdaCommonDecodeRepeat decode_repeat;
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} IrdaCommonProtocolSpec;
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struct IrdaCommonDecoder {
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const IrdaCommonProtocolSpec* protocol;
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IrdaCommonState state;
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IrdaMessage message;
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uint32_t timings[6];
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uint8_t timings_cnt;
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uint32_t level;
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uint16_t databit_cnt;
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uint8_t data[];
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};
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static inline void shift_left_array(uint32_t *array, uint32_t len, uint32_t shift) {
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for (int i = 0; i < len; ++i)
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array[i] = array[i + shift];
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}
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IrdaMessage* irda_common_decode(IrdaCommonDecoder *decoder, bool level, uint32_t duration);
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void* irda_common_decoder_alloc(const IrdaCommonProtocolSpec *protocol);
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void irda_common_decoder_free(void* decoder);
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DecodeStatus irda_common_decode_pdwm(IrdaCommonDecoder* decoder);
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